d91a7c741f9ab4ef681cb4924bb04453494c5a39762501258dabf202b8ec0f0a

General

Target

invoice-02-01-2022.xls
Size

51KB
MD5

04a6bacaf107ae57c0dad8e133997418
SHA1

9b3f379764d2501fc91164ecc67c5bbccad5d0ed
SHA256

a3f128976fb477883db4f7ecc2aae05e61e2de224ad584454022aced8f8f5ca5
SHA512

c1d90054931c457ae263746f26b3bcf2883d813c177078574aced6e49d197cb1794e5fb47e532dd2aca1646ac0d17baca10c59e42a59b04cc172ef2285d84d6c

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

WerFault.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	116	1964	WerFault.exe	EXCEL.EXE

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

116 1964 WerFault.exe EXCEL.EXE
2376 2968 WerFault.exe

pid	pid_target	process	target process
116	1964	WerFault.exe	EXCEL.EXE
2376	2968	WerFault.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1964 EXCEL.EXE
Suspicious use of SetWindowsHookEx 8 IoCs

Processes:

EXCEL.EXE

pid process

1964 EXCEL.EXE
1964 EXCEL.EXE
1964 EXCEL.EXE
1964 EXCEL.EXE
1964 EXCEL.EXE
1964 EXCEL.EXE
1964 EXCEL.EXE
1964 EXCEL.EXE

pid	process
1964	EXCEL.EXE

pid	process
1964	EXCEL.EXE
1964	EXCEL.EXE
1964	EXCEL.EXE
1964	EXCEL.EXE
1964	EXCEL.EXE
1964	EXCEL.EXE
1964	EXCEL.EXE
1964	EXCEL.EXE

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\invoice-02-01-2022.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1964

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1964 -s 4440
2⤵
- Process spawned unexpected child process
- Program crash
PID:116

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 448 -p 1964 -ip 1964
1⤵
PID:1332

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 556 -p 2968 -ip 2968
1⤵
PID:4108

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 2968 -s 772
1⤵
- Program crash
PID:2376

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1964-130-0x00007FFDED470000-0x00007FFDED480000-memory.dmp

Filesize
64KB

Download
memory/1964-131-0x00007FFDED470000-0x00007FFDED480000-memory.dmp

Filesize
64KB

Download
memory/1964-132-0x00007FFDED470000-0x00007FFDED480000-memory.dmp

Filesize
64KB

Download
memory/1964-133-0x00007FFDED470000-0x00007FFDED480000-memory.dmp

Filesize
64KB

Download
memory/1964-134-0x00007FFDED470000-0x00007FFDED480000-memory.dmp

Filesize
64KB

Download
memory/1964-135-0x00007FFDEADC0000-0x00007FFDEADD0000-memory.dmp

Filesize
64KB

Download
memory/1964-136-0x00007FFDEADC0000-0x00007FFDEADD0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads